{"title":"Chaotic phase code for radar pulse compression","authors":"Xin Wu, Weixian Liu, Lei Zhao, J. Fu","doi":"10.1109/NRC.2001.922991","DOIUrl":"https://doi.org/10.1109/NRC.2001.922991","url":null,"abstract":"This paper presents a novel binary phase coding scheme for radar pulse compression, which is derived from the logistic-map equation in the chaotic theory. The proposed logistic-map-based binary phase code (LMBPC) makes it feasible to achieve superior performance in detection range. The logistic-map equation in the chaotic theory is range resolution and Doppler tolerance simultaneously. The properties of LMBPC, including autocorrelation function, ambiguity diagram, performance under various noisy backgrounds, and the maximum Doppler tolerance, have been analyzed and compared to those of the conventional schemes, such as linear FM. The properties of LMBPC are very similar to those of the random binary codes. However, the generation of LMBPC is much simpler, and the available LMBPC is virtually infinite and not limited by the length of code. A parallel correlator structure for the pulse compression filter has also been introduced, which serves to improve the Doppler tolerance.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115934880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Maese, J. Melody, S. Katz, M. Olster, W. Sabin, A. Freedman, H. Owen
{"title":"Dual-use shipborne phased array radar technology and tactical environmental sensing","authors":"T. Maese, J. Melody, S. Katz, M. Olster, W. Sabin, A. Freedman, H. Owen","doi":"10.1109/NRC.2001.922942","DOIUrl":"https://doi.org/10.1109/NRC.2001.922942","url":null,"abstract":"This paper describes the use of military phased array radar technology for environmental sensing and details the results of an at-sea demonstration of the Tactical Environmental Processor (TEP). The TEP system is a COTS-based signal processor that converts radar inphase and quadrature (I/Q) data into spectral moment data used by the meteorological community. The work detailed was performed under cooperative agreement between Lockheed Martin and The Office of Naval Research.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124937802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhancements of NP-3 UHF image quality using digital spotlighting technique","authors":"R.R.-Y. Lee, J. Verdi, M. Soumekh","doi":"10.1109/NRC.2001.922941","DOIUrl":"https://doi.org/10.1109/NRC.2001.922941","url":null,"abstract":"This paper is concerned with signal processing issues that are associated with foliage penetrating (FOPEN) USA Navy NP-3 ultra-wideband (UWB) synthetic aperture radar. The digital signal processors that were developed for the NP-3 data commonly used a radar beamwidth angle that was limited to 35 degrees. Provided that the NP-3 radar beamwidth angle was 35 degrees, the NP-3 SAR system would approximately yield alias-free data in the slow-time Doppler domain. We show that the NP-3 data possess a 50-degree beamwidth angle within the entire 215-730 MHz band of the NP-3 radar that is imposed by the radar (radial) range swath gate. The 50-degree beamwidth of the NP-3 system results in slow-time Doppler aliasing within the frequency band of 444-730 MHz. We outline a slow-time processing of the NP-3 data, that we refer to as digital spotlighting and PRF upsampling, to minimize the Doppler aliasing. The digital spotlighting is also used for in-scene target calibration.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121383068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Antonik, R. Bonneau, R. Brown, S. Ertan, V. Vannicola, D. Weiner, M. Wicks
{"title":"Bistatic radar denial/embedded communications via waveform diversity","authors":"P. Antonik, R. Bonneau, R. Brown, S. Ertan, V. Vannicola, D. Weiner, M. Wicks","doi":"10.1109/NRC.2001.922949","DOIUrl":"https://doi.org/10.1109/NRC.2001.922949","url":null,"abstract":"Use of an interferometer along with a host radar is proposed for simultaneously achieving coherent reference denial and embedded communications. To prevent self-jamming, spatial orthogonality is achieved between the interferometer antenna pattern and main beam of the host radar. Costas and orthogonal frequency division multiplexing (OFDM) signals are suggested for the host radar and interferometer, respectively. The effectiveness of the interferometer masking signal on a non-cooperative bistatic radar is discussed.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134641116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Best management of FM waveform by a missile-borne pulsed Doppler radar during high-manoeuvring target tracking in strong clutter environment","authors":"S. Camplani, G. Petrillo, D. Pistoia","doi":"10.1109/NRC.2001.923002","DOIUrl":"https://doi.org/10.1109/NRC.2001.923002","url":null,"abstract":"Referring to the application of missile-borne pulsed Doppler radars, the use of a radiofrequency HPRF-FM seeker, having a monopulse tracking processing, is considered in scenarios with a low altitude flying high-manoeuvring target. During target tracking the seeker has to solve the situations when the clutter signal occupies the target frequency positions and tracking can be lost. The algorithm that is presented shows how to dynamically choose an optimum FM factor, so to reduce clutter disturbing effects and to maintain a stable target tracking.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131543632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"SAR prescreening using both target and shadow information","authors":"P. Lombardo, M. Sciotti, Lance M. Kaplan","doi":"10.1109/NRC.2001.922968","DOIUrl":"https://doi.org/10.1109/NRC.2001.922968","url":null,"abstract":"The utility of fusing shadow and intensity detections in a SAR prescreener is evaluated over the MSTAR database. We use either power ratio, GLRT or two-parameter CFAR tests to extract the two detections. For any testing strategy, the addition of shadow information improves performance.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131996541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The problem of kill assessment: a challenge for radar tracking systems","authors":"J.E. Gray, J. Richard, P. Brastrom","doi":"10.1109/NRC.2001.923001","DOIUrl":"https://doi.org/10.1109/NRC.2001.923001","url":null,"abstract":"Both current and future problems of kill assessment are discussed from a surface navy perspective. The basic terminology of kill assessment is discussed in the introduction, which provides the pedestrian background to the common vocabulary. Some of the underlying sources of potential kill assessment information and aspects of current decision taking methodology is discussed in the section on endo-atmosphere kill assessment. In the third section, the challenge of exo-atmospheric kill assessment is addressed and a discussion of how to deal with the dearth of data by a data collection experiment is detailed.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115708074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application of array processing techniques to multibaseline InSAR for layover solution","authors":"F. Lombardini, F. Gini, P. Matteucci","doi":"10.1109/NRC.2001.922979","DOIUrl":"https://doi.org/10.1109/NRC.2001.922979","url":null,"abstract":"Synthetic aperture radar interferometry (InSAR) is a modern technique to derive digital height maps of the land surface from SAR images. In recent years there has been great interest in exploiting the advanced multibaseline operation for solving layover effects that can degrade SAR and InSAR imagery. We consider detailed modelling of this problem including speckle noise for extended targets, application of several nonparametric and parametric spectral estimation methods to multibaseline layover solution, and performance analysis. The problem of layover solution is formulated as the estimation of a multi-component signal composed by multiple cisoids corrupted by complex multiplicative Gaussian noise and additive white Gaussian thermal noise. Beamforming, Capon's, High-Order Yule-Walker, MUSIC, Min-Norm, and ESPRIT spatial spectral estimators are applied to this interferometric problem, and an extensive simulated performance comparison is carried out in terms of statistical accuracy and resolution.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114594734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of various image enhancement techniques on FOPEN data","authors":"L. Novak","doi":"10.1109/NRC.2001.922957","DOIUrl":"https://doi.org/10.1109/NRC.2001.922957","url":null,"abstract":"An investigation of FOPEN target discrimination performance is summarized using UHF SAR data gathered at Grayling, MI by the USA Navy's P-3 SAR Sensor. The fully polarimetric data are processed using polarimetric whitening; superresolution processing is then applied to enhance the resolution of the whitened data. Several superresolution approaches are investigated and target discrimination performance achieved using superresolution processing is quantified. Discriminator ROC curves showing probability of detection versus probability of false alarm are used to compare performance; an eigenvector-based superresolution approach is shown to provide the best performance improvement.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"3 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113932125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A general signal processing algorithm for MTI with multiple receive apertures","authors":"N. Goodman, J. M. Stiles","doi":"10.1109/NRC.2001.922998","DOIUrl":"https://doi.org/10.1109/NRC.2001.922998","url":null,"abstract":"Moving target indication (MTI) is demonstrated for general antenna arrays, especially sparse 3D arrays. The framework for space-time adaptive processing (STAP) is generalized to include frequency (fast-time) data and array elements offset in cross track dimensions. The degrees of freedom (rank) needed to represent clutter are derived for general systems. The clutter rank compared to the number of independent samples collected by a radar determine whether MTI is achievable. The optimum detector and the minimum norm eigen canceler (MNE) are implemented through simulation to demonstrate effective clutter cancellation.","PeriodicalId":214828,"journal":{"name":"Proceedings of the 2001 IEEE Radar Conference (Cat. No.01CH37200)","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116692286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}